Brush.



PATENTED NOV. 19, 1907.

F. H. LUMBARD.

BRUSH.

PPLIOATIN FILED MAE. 30| 1907.

lnz/emof' mijjzflunzra y 06,5 6MM FRANK II. LUMBARD, OF CHICAGO,ILLINOIS.

, BRUSH.

Np. 871,603.k

Specification of Letters Patent.

Patented Nov. 19, 1907'.

Application led March 30| 1907. Serial No. 365.543-

" sembling the parts, and thereby saving valuable `time and alsoincreasing the durability of the completed article.

1 In the drawing, Figure 1 is a view i-n perspective of a ferrule.looking at the upper side. Fig. 2 is a similar view looking at theunder side. Fig. 3 is a transverse section of the ferrule through thebody thereof. Fig. 4 is a sectional elevation showing the parts looselyassembled; and Fig. 5 is a similar view of the completed article.

A'represents thehandle, B the bristles and C a ferrule or cap used inthe operation of firmly securing the respective parts in their assembledrelation.

As this invention'relates more especially to the flat type of brushes,that form is used in illustrating the improvement.

' The ferrule C is an integral fabrication of thin sheet steel and forflat brushes thc contouris of the oval elongated form shown. In theoperation of manufacture the single piece `of metal is struck up in thedesired form,the center elongated part of the plate beingforced upwardor inward to provide a solid imperforate diaphragm 6 dividing thestructure into the cupped out receptacles formingthe brush-socket 7 andthe handle socket 8. rlhe operation of forcing a portion of the ferruleblank inward or upward in pro viding the diaphragm feature, forms adouble wall 9 below the same and a thickened bead edge 1() in the foldof the metal. This double-wall construction affords increased wedges orAwire in securing the different parts together. In the use of thin sheetsteel a lighter ferrule can be made, than if cast or i forged, which isanother important advantage. The cost of production is also less.

In the operation of making the brush, the butt ends of the bristles areinserted in the socket 7 and bottom or level up on the diaphragm 6. Atriangular shaped clamping wedge 12 is then loosely inserted dividingthe butt endsl of the bristles through the center, as shown in Figs. 4and 5. It will be noted that the fixed position of the wedge brings oneof the edges or corners 13 straight downward, the two opposite slopingsides 14 and 15 vanishing therein. The wedge is loosely slipped intoplace as it is not intended to eX- ert an outward pressure, the bristlesbeing .secured by an inward pressure.

The contour and position of the clampingwedge with reference to thebinding bead edge of the ferrule is such, that when a pressure isexerted from the outside inward a kink or bend 16 will be formed in thebristles by the pressure against the sloping or undersides of theclamping wedge piece and will prevent any possibility of the bristlesbecoming loose or Working out. After the center binding wedge isproperly inserted the brush is placed in a suitable machine and aninward all around die-pressure is applied to the binding bead edge 1()which bends the same inward and firmly clamps the bristles between theinner side ofthe double-wall of the ferrule and the binding wedge, asshown in Fig. 5. By this means the bristles are compacted in place byfrictional contact, no other or separate `fastening being required.

Fig. 4 shows the double wall andibead edge in its normal constructiveposition for the bunching of the bristles.

The ferrule being capable of a change of form after the bristles areinserted, by setting the bead edge inward makes it possible to morefirmly secure the same in place than te wall inclosing the brush socketwas rigi The handle is provided with a continuous groove 17 and issecured in place by compressing the upper edge of the single wall 181nto said groove, as shown in Fig. 5.

Having thus described my invention, what I claim is- 1. A brush-ferrule,comprising in an integral structure, a bristle-socket, a handlesocket,and an imperforate division diahragm, one of said sockets being inciosedy a double-Wall having a bead edge, and the i other socket ineiosed by aWali--edge of a singie thickness.

2. A brush-ferrule, Comprising an integrai structure, consisting of abrush-socket, a hand1esocket, and a -solid diaphragzrn von a 'line ibetween said sockets, the brush-socket being inclosed by a double Wallhaving a bindingv bead -edgeadapted 'to ybe compressed inward insecuring the Ibristles firmly in place.

43. A brush-ferrule of integral struct-ure., l comprising abrush-socket, a handle-socket,

and a division diaphragm, the brush-socket being inolosed by a doubleWall having a bead 15 In testimony whereof I have signed my 2Q name tothis speciication in the presence of tWo subscribing Witnesses.

FRANK H. LUMBARD. Witnesses:

L. B. COUP-LAND, G. CHURCH.

